CN102654271A - LED (light emitting diode) condenser lens - Google Patents
LED (light emitting diode) condenser lens Download PDFInfo
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- CN102654271A CN102654271A CN201110052849XA CN201110052849A CN102654271A CN 102654271 A CN102654271 A CN 102654271A CN 201110052849X A CN201110052849X A CN 201110052849XA CN 201110052849 A CN201110052849 A CN 201110052849A CN 102654271 A CN102654271 A CN 102654271A
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- light source
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Abstract
The invention discloses an LED (light emitting diode) condenser lens. The condenser lens is a round-table revolution body and is provided with an optical axis overlapped with a revolution axis of the revolution body; the condenser lens comprises a light source containing tank corresponding to the small end of the condenser lens, a light emitting surface corresponding to the big end of the condenser lens, and a fully-reflecting surface located on the outer side wall of the condenser lens; the light source containing tank is a hemispherical tank; the light emitting surface sinks inward and forms a conical surface part in the middle and protruding outward and a plane part surrounding the conical surface part; the vertex of the conical surface part and the sphere center of the light source containing tank are located on the optical axis; and the light source containing tank and the conical surface part define a central condensation part together. Compared with the prior art, the LED condenser lens disclosed by the invention has an efficient condensation function on an LED; after the light emitted by the LED is processed by the LED condenser lens disclosed by the invention, the light emitting angle is very small; and the LED condenser lens disclosed by the invention also can remarkably improve the utilization rate of the LED luminous flux of a lamp while guaranteeing the condensation function.
Description
Technical field
The present invention relates to LED (Light Emitting Diode, light emitting diode) collector lens technical field, more particularly, relate to a kind of lens with high-effective concentration function.
Background technology
In order to realize optically focused to LED; A kind of way of prior art is to adopt to have paraboloidal reflector realization optically focused; But this mode but is difficult to be applied to the luminous angle occasion of little (as spending less than 5 when luminous angle); Must the reflector size be increased, otherwise the less light in luminous angle can't be utilized, increase the luminous angle of light the most at last.
Also occurred adopting convex lens that LED is carried out the technical scheme of optically focused in the prior art, but there is the lower problem of LED luminous flux utilization rate in these schemes, be in particular in that the bigger light in luminous angle can't be utilized, and has finally reduced the light efficiency of light fixture.
In addition; Some new LED collector lenses have also appearred in the prior art; The material of lens is generally PC (Poly Carbonate, Merlon) or PMMA (Polymethyl Methacrylate polymethyl methacrylate), and its principle is to utilize the total reflection and the refraction of light; Be made into the lens of comparison optically focused, realize converging light.But defectives such as these LED collector lenses exist moulding process to have relatively high expectations usually, and difficulty of processing is bigger.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of LED collector lens, and it has light-focusing function efficiently, and has higher LED luminous flux utilization rate.
For solving the problems of the technologies described above; A kind of technical scheme of the present invention is: a kind of LED collector lens is provided; Said collector lens is the revolving body that is round table-like; And have the optical axis that overlaps with the gyroaxis of revolving body, and said collector lens comprises the exiting surface of the light source holding tank of corresponding collector lens small end, the big end of corresponding collector lens and the fully reflecting surface that is positioned at the collector lens lateral wall, said light source holding tank is a semi-spherical grooves; Said exiting surface caves inward; And form and to be positioned at center and outwards outstanding conical surface part and around the planar section of said conical surface part, the summit of said conical surface part and the centre of sphere of said light source holding tank all are positioned on the said optical axis, said light source holding tank partly defines a center optically focused part jointly with the said conical surface.
More specifically, the summit of said conical surface part and the centre of sphere of said light source holding tank all are positioned on the said optical axis, and the summit and the said planar section of said conical surface part are positioned at same plane.
More specifically, the angle theta of the bus of said conical surface part and said optical axis satisfies following formula:
In the formula, n is the refractive index of lens material, and the value of α is between 5-10 °.
More specifically, the refractive index n of said lens material is 1.59, and the angle theta of said bus and said optical axis is 63 °.
More specifically, the equal diameters of the diameter of said light source holding tank and said conical surface part.
More specifically, the radius of said light source holding tank is 2.45 millimeters.
More specifically, led chip is positioned at the sphere center position of said light source holding tank.
More specifically, the bus of said revolving body is a parabolic segment.
More specifically, the focal length of said parabolic segment is not less than the radius of said light source holding tank.
For solving the problems of the technologies described above; Another kind of technical scheme of the present invention is: a kind of LED collector lens is provided; Said collector lens is to be intersected and become one and constitute by a plurality of above-mentioned LED collector lenses; The planar section of said a plurality of collector lens exiting surfaces is positioned at same plane, and each conical surface part summit evenly distributes in the plane.
Compared with prior art, the present invention has light-focusing function efficiently to LED, and the light that LED sends is after LED collector lens of the present invention effect, and its emergent light is almost parallel with optical axis, and luminous angle is very little; When guaranteeing light-focusing function, the present invention also can greatly improve the utilization rate of light fixture to the LED luminous flux; In addition, the machine-shaping of LED collector lens of the present invention is also simple relatively.
Description of drawings
Fig. 1 is the schematic perspective view of the embodiment of the invention one;
Fig. 2 is the schematic side view of Fig. 1;
Fig. 3 is the cross-sectional schematic of Fig. 1;
Fig. 4 is a light path principle figure embodiment illustrated in fig. 1;
Fig. 5 is distribution curve flux figure embodiment illustrated in fig. 1;
Fig. 6 is the schematic perspective view of the embodiment of the invention two.
The specific embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Please referring to figs. 1 through Fig. 3; Be embodiments of the invention one; Said collector lens L is the revolving body that is round table-like; And having the optical axis A that overlaps with the gyroaxis of revolving body, said collector lens comprises the exiting surface 2 of the light source holding tank 1 of corresponding collector lens small end, the big end of corresponding collector lens and the fully reflecting surface 3 that is positioned at the collector lens lateral wall.Said light source holding tank 1 is a semi-spherical grooves; The middle part of said exiting surface 2 caves inward; And form and to be positioned at center and outwards outstanding conical surface part 21 and around the planar section 22 of said conical surface part 21, the centre of sphere of the summit of said conical surface part 21 and said light source holding tank 1 all is positioned on the said optical axis.Said light source holding tank 1 defines a center optically focused part jointly with said conical surface part 21.
Compared with prior art, present embodiment has light-focusing function efficiently to LED, and the light that LED sends is after LED collector lens of the present invention effect, and its emergent light is almost parallel with optical axis, and luminous angle is very little; When guaranteeing light-focusing function, the present invention also can greatly improve the utilization rate of light fixture to the LED luminous flux; In addition, the machine-shaping of LED collector lens of the present invention is also simple relatively.
Below present embodiment is done further to introduce in detail.
Please with reference to Fig. 3 and Fig. 4, the centre of sphere of the summit of said conical surface part 21 and said light source holding tank 1 all is positioned on the said optical axis, and the summit of said conical surface part 21 and said planar section 22 are positioned at same plane.The summit that is said conical surface part 21 overlaps with the center of circle of said planar section 22.
In the present embodiment, the angle theta of the bus of said conical surface part 21 and said optical axis A satisfies following formula:
In the formula, n is the refractive index of lens material, and the value of α is between 5-10 °.
Preferable scheme is that the employing refractive index is 1.59 PC material, and the bus of said conical surface part 21 and the angle theta of said optical axis are 63 °.The equal diameters of the diameter of said light source holding tank 1 and said conical surface part 21.The radius of said light source holding tank is 2.45 millimeters.
Like this; The center optically focused part that defines jointly by said light source holding tank 1 and said conical surface part 21; Can play the effect of refraction to the smaller light in the luminous angle of LED; Emergent ray after said center optically focused partly reflects almost is parallel to optical axis A, and the luminous angle of emergent light is very little, has reached fabulous optically focused performance.
Please combine with reference to Fig. 2 and Fig. 3, present embodiment, the bus of said revolving body are a parabolic segment.The focal length of parabolic segment can be confirmed according to the size of lens.Usually, the focal length of said parabolic segment must be not less than the radius of said light source holding tank 1.
Please with reference to Fig. 4, led chip is positioned at the sphere center position of said light source holding tank 1, in the light that led chip penetrates, during the said fully reflecting surface 3 of the bigger light directive in these luminous angles that got into by light source holding tank 1 side, total reflection takes place promptly.And the light of the overwhelming majority is reflected; The direction of propagation of reflection ray is also almost parallel with optical axis A, and penetrates from the planar section 22 of said exiting surface 2, behind the said planar section 22 of process; Deflection phenomenon can not take place in light basically yet, still propagates along the direction that is parallel to optical axis A.The luminous angle of emergent light is very little, has reached fabulous optically focused performance.
The collector lens of present embodiment is injection molded by transparent material.Can select PC or PMMA.Yes, for other transparent materials, as long as parameters can satisfy present embodiment and propose each item requirement, all can be used as the candidate material that is applied to present embodiment.
And present embodiment is owing to adopt rotary structure, and hemispheric light source holding tank 1 and conical surface part 21 all are easy to moulding, so can reduce the processing cost of LED collector lens greatly.
Please with reference to Fig. 5, the distribution curve flux figure for present embodiment can be known by this figure, 5 ° of luminous angle less thaies.It is thus clear that present embodiment has light-focusing function efficiently, the light that LED sends is after LED collector lens of the present invention effect, and its emergent light is almost parallel with optical axis, and luminous angle is very little.
Please with reference to Fig. 6, be embodiments of the invention two, said collector lens is to be intersected and become one and constitute by 3 above-mentioned LED collector lens L, and the planar section of said 3 collector lens exiting surfaces is positioned at same plane, and the distance between the conical surface part summit equates.Like this, be triangular arranged between the optical axis of each LED collector lens, therefore 3 led chips can be installed.Certainly, can also adopt 4,5 or 6 LED collector lens L, each conical surface part summit must evenly distribute in the plane.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. LED collector lens; Said collector lens is the revolving body that is round table-like; And has an optical axis that overlaps with the gyroaxis of revolving body; It is characterized in that: said collector lens comprises the exiting surface of the light source holding tank of corresponding collector lens small end, the big end of corresponding collector lens and the fully reflecting surface that is positioned at the collector lens lateral wall; Said light source holding tank is a semi-spherical grooves, and said exiting surface caves inward, and forms and to be positioned at center and outwards outstanding conical surface part and around the planar section of said conical surface part; The summit of said conical surface part and the centre of sphere of said light source holding tank all are positioned on the said optical axis, and said light source holding tank and said conical surface part define a center optically focused part jointly.
2. LED collector lens as claimed in claim 1 is characterized in that: the summit and the said planar section of said conical surface part are positioned at same plane.
3. LED collector lens as claimed in claim 2 is characterized in that: the bus of said conical surface part and the angle theta of said optical axis satisfy following formula:
In the formula, n is the refractive index of lens material, and the value of α is between 5-10 °.
4. LED collector lens as claimed in claim 3 is characterized in that: the refractive index n of said lens material is 1.59, and the angle theta of said bus and said optical axis is 63 °.
5. LED collector lens as claimed in claim 2 is characterized in that: the equal diameters of the diameter of said light source holding tank and said conical surface part.
6. LED collector lens as claimed in claim 5 is characterized in that: the radius of said light source holding tank is 2.45 millimeters.
7. LED collector lens as claimed in claim 6 is characterized in that: led chip is positioned at the sphere center position of said light source holding tank.
8. like any described LED collector lens of claim 1 to 7, it is characterized in that: the bus of said revolving body is a parabolic segment.
9. LED collector lens as claimed in claim 8 is characterized in that: the focal length of said parabolic segment is not less than the radius of said light source holding tank.
10. LED collector lens; Said collector lens is to be intersected and become one and constitute like any described LED collector lens of claim 1 to 9 by a plurality of; The planar section of said a plurality of collector lens exiting surfaces is positioned at same plane, and each conical surface part summit evenly distributes in the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110052849.XA CN102654271B (en) | 2011-03-04 | 2011-03-04 | LED (light emitting diode) condenser lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110052849.XA CN102654271B (en) | 2011-03-04 | 2011-03-04 | LED (light emitting diode) condenser lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102654271A true CN102654271A (en) | 2012-09-05 |
| CN102654271B CN102654271B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110052849.XA Expired - Fee Related CN102654271B (en) | 2011-03-04 | 2011-03-04 | LED (light emitting diode) condenser lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090778A (en) * | 2014-05-14 | 2015-11-25 | 璨圆光电股份有限公司 | Illumination device having broad lighting distribution |
| CN106641752A (en) * | 2016-11-25 | 2017-05-10 | 宁波公牛光电科技有限公司 | Light distribution module and lamp |
| CN108873145A (en) * | 2018-05-16 | 2018-11-23 | 四川斐讯信息技术有限公司 | A kind of novel optic column and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6213625B1 (en) * | 1999-04-23 | 2001-04-10 | Nsi Enterprises, Inc. | Inverted apex prismatic lens |
| CN101893200A (en) * | 2010-07-30 | 2010-11-24 | 海洋王照明科技股份有限公司 | Condenser lens and lamp using same |
-
2011
- 2011-03-04 CN CN201110052849.XA patent/CN102654271B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6213625B1 (en) * | 1999-04-23 | 2001-04-10 | Nsi Enterprises, Inc. | Inverted apex prismatic lens |
| CN101893200A (en) * | 2010-07-30 | 2010-11-24 | 海洋王照明科技股份有限公司 | Condenser lens and lamp using same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090778A (en) * | 2014-05-14 | 2015-11-25 | 璨圆光电股份有限公司 | Illumination device having broad lighting distribution |
| CN105090778B (en) * | 2014-05-14 | 2018-11-02 | 晶元光电股份有限公司 | Go out the lighting device of light distribution with wide-angle |
| CN106641752A (en) * | 2016-11-25 | 2017-05-10 | 宁波公牛光电科技有限公司 | Light distribution module and lamp |
| CN108873145A (en) * | 2018-05-16 | 2018-11-23 | 四川斐讯信息技术有限公司 | A kind of novel optic column and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102654271B (en) | 2014-03-12 |
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